BLAKE—REVISION OF RINOREA, 505. 
what rhombic-obovate or oval-obovate, 7 to 14.5 em. long, 2.5 to 6 cm. wide, 
acuminate or short-pointed, narrowed to the rounded or subecordate often 
oblique base, coarsely crenate-serrate with acutely mucronulate teeth, charta- 
ceous, puberulous on costa above or glabrate, beneath lighter green, hispidulous 
along costa and sometimes along the 8 to 13 pairs of lateral veins, loosely 
reticulate; panicle terminal, 4.5 cm. long, sordid-puberulous with ascending 
hairs, the peduncle 2.2 cm. long, equaling the axis of inflorescence, the few 
branches 3-flowered, the pedicels about 2.5 mm. long; sepals ovate or lance- 
ovate, 2.5 to 3 mm. long, acuminate, hyaline, weakly 3-veined, ciliate, on back 
sparsely pilose; petals white, oblong, 5.2 mm. long, rounded at apex, glabrous 
except for the tufted apex; stamens 3.7 mm. long, the filaments 0.4 to 0.5 mm. 
long, rather broad, slightly exceeded by the small adnate gland, the anthers ob- 
long-ovate, 1.7 mm. long, bearing at apex 1 or 2 linear to oblanceolate mem- 
pranaceous upwardly serrate appendages about 0.8 mm. long, the connective 
scales oblong, 3.2 mm. long, broadly rounded at apex, strongly erose especially 
below, glabrous; ovary densely hispid-pilose, the placentae 1-ovulate. 
Type in the herbarium of the New York Botanical Garden, collected in forests 
at Malena, Department of Antioquia, Colombia, altitude 150 to 170 meters, 
January 12, 1918, by F. W. Pennell (no. 3783). Photograph in the U. S. 
National Herbarium. 
This species is distinguished from R. ulmifolia, apparently its closest 
ally, by its oblong, strongly erose scales and appendaged anthers. It is 
of special interest as the only species seen in which opposite and alternate 
leaves occur on the same branch. In this case all the leaves on the older 
part of the specimen are truly alternate, while those on the younger shoots are 
opposite. It is noteworthy also for the size of the anther appendages. 
EXPLANATION OF PLATE 33.—Rinorea hymenosepala, from the type specimen. Natural 
size. 
16. Rinorea ulmifolia (H. B. K.) Kuntze, Rev. Gen, Pl. 1: 42. 1891, 
Conoria ulmifolia H. B. K. Nov. Gen, & Sp. 5: 387. pl. 491. 1825. 
Alsodea ulmifolia Spreng. Syst. Veg. 1: 807, 1825. 
Shrub with glabrous branches; leaves opposite; petioles 2 to 4 mm. long, 
puberulous; blades obovate or elliptic-obovate, 7.5 to 11 cm. long, 2.5 to 4 cm. 
wide, acuminate or short-pointed, at base usually subcordate, serrate, the 
younger pilose on both sides, the older puberulous on the venation; panicles 
about 3 cm. long, pubescent, the branchlets 1 or 2-flowered; sepals elliptic, 
ciliolate; petals ovate, 4 or 5 mm. long, obtusish, glabrous, about twice as 
long as the sepals; filaments very short, unappendaged, the anthers un- 
appendaged, the connective scales about twice as long, oblong-obovate (in fig- 
ure), rounded, entire, glabrous; ovary pilose, the placentae 1-ovulate; capsule 
3-seeded, about 9 mm. long, pilosulous above; seeds glabrous. 
TYPE LOCALITY : Near La Boca de San Bartolomé, shore of the Rio Magdalena, 
Colombia. Type collected by Humboldt and Bonpland. 
Not seen; description condensed from the original. To be distinguished by 
its entire connective scales, eglandular filaments, and leaves puberulous on 
the veins. Triana and Planchon® record the species from Santa Ana, on 
the Rio Magdalena, altitude 1,168 meters (Linden 1168), and from Agua 
Chica, Province of Ocafia, altitude 165 meters (Schlim 272). 
17. Binorea hummelii Sprague, Kew Bull. 1921: 307. 1921. 
Medium-sized tree; young branchlets minutely spreading-pubescent; leaves 
opposite; petioles 3 to 5 mm. long, minutely pubescent; blades obovate, 
* Ann. Sei. Nat. IV. Bot. 17: 126. 1862. 
